baber/WOPTO huggingface dataset:
Patent CA-2212145-A1 (CA)
Title: A blowing agent containing catalyst precursor for the preparation of a polyol composition having good flow and a rigid polyurethane foam made thereby having good dimensional stability
Inventor: FISHBACK THOMAS L
IPC: C08G18/28
Filed: 1994-09-21
Abstract: Disclosed is a blowing agent containing catalyst precursor consisting essentially of: a)   a blowing agent comprising formic acid, or a mixture of formic acid and water; b)   a  tertiary  amine  blowing  catalyst  fully blocked with an organic carboxylic acid; and c)   a tertiary amine gel catalyst fully blocked by an organic carboxylic acid; wherein  the  total  number  of carboxylic  acid  group equivalent  including the carboxylic acid groups  blocking  in the   form, is greater than 1.0 per amino group. This precursor  can  be  used  for  the preparation  of  a  polyol composition having good flow characteristics which in turn makes a rigid polyurethane having good dimensional stability at low densities.
Patent CA-2212325-A1 (CA)
Inventor: EGAN THOMAS D
IPC: A61B17/12
Filed: 1995-02-16
Abstract: A device and method of suturing closed an opening and ligating a vessel or duct comprising removable tissue puncturing means (22) or vessel surrounding means establishing a continuous channel (24) through said tissue or around said vessel from each side. A completed channel (24) is formed and suture material (26) is threaded through the channel making a complete loop. The thread is secured at an anvil (30) independent from said puncturing/surrounding means.   The puncturing/surrounding means is retracted leaving the thread, which is then tensioned closing the opening or occluding the vessel.      The suture thread is secured and cut, forming a closed loop with overlapping ends. An energy transmitting device (38) melts the suture thread ends together forming a weld. The anvil (30) is removed leaving a knot-free completed stitch or ligature.
Patent CA-2212793-A1 (CA)
Title: Fire control system
Inventor: MAAS ABRAHAM JOHANNES
IPC: F41G5/08
Filed: 1996-02-09
Abstract: The present invention relates to a fire control system (5), and more particularly, a method of estimating a periodic component of a target path (3).  An efficient, fast-settling. estimator is realized by first estimating the period and then the amplitude of the periodic component on the basis of the most recent measurements made.
Patent CA-2213119-A1 (CA)
Title: Highly polymerizable n-vinylcarboxylic acid amide and production process thereof
Inventor: SHIMAMURA KENJI
IPC: C07C233/05
Filed: 1995-12-28
Abstract: A highly polymerizable N-vinylcarboxylic acid amide having an N-1,3-butadienylcarboxylic acid amide content of 30 ppm or less, a process for producing the same, and a process for producing a homopolymer of N-vinylcarboxylic acid amide or a copolymer thereof with another copolymerizable monomer using the same. Also, a highly polymerizable N-vinylcarboxylic acid amide is produced by thermal cracking or catalytic cracking of N-(1-alkoxyethyl)carboxylic acid amide or ethylidenebiscarboxylic acid amide, wherein the N-vinylcarboxylic acid amide content of the N-(1-alkoxyethyl)-carboxylic acid amide or ethylenebiscarboxylic acid amide is 10 wt.% or less.
Patent CA-2213412-A1 (CA)
Title: Rotating fiber optic coupler for high power laser welding applications
Inventor: PETERSON ARTIE G JR
IPC: B23K26/20
Filed: 1996-03-27
Abstract: A laser welding apparatus for clad welding the interior surface of a tube includes a rotating sleeve that encloses a fiber optic cable. A stationary laser (100) generates light energy for the welding operations performed by the rotating sleeve (324). An optical coupler (342) is positioned between the laser and the rotating sleeve (324). A rotating cable interface assembly (320) receives the collimated and focused light energy from the fixed optical assembly and applies it to the fiber optic cable (340), which delivers the light energy to the interior surface of a tube (20) to produce a clad weld. The rotating cable interface assembly includes concentric alignment device (480) and a monitoring cavity (502) to provide optical feedback regarding the alignment between the fixed optical assembly and the rotating cable interface assembly. The rotating cable interface assembly (454) may be constructed to include a safety fiber optic (520) with an accompanying safety fiber optic photocell (522) which is used to assess whether excessive light energy from the laser is being used.
Patent CA-2214684-A1 (CA)
Title: Technique for electronically stabilizing the outputs of acoustooptic devices
Inventor: KUMP JOHN
IPC: G02F1/33
Filed: 1997-09-05
Abstract: A technique of stabilizing the output of an acoustooptic modulator.  A laser passes a light beam through the acoustooptic modulator.  A driver circuit connects to a drive electrode of the acoustooptic modulator.  RF generators deliver drive power at a first carrier frequency and compensation power at second and third carrier frequencies, one higher and the other lower than the first carrier frequency.  The driver circuit modulates the drive power and the compensation power such that compensating acoustic energy induced in the acoustooptic modulator complements drive acoustic energy and the spatial content of the drive acoustic energy. The combined drive power and the complementing compensating power maintain the spatial thermal energy distribution inside the acoustooptic modulator substantially constant.  Consequently, beam steering and thermal ellipticity are stabilized and remain substantially constant throughout the operating range of the modulator.
Patent CA-2214717-A1 (CA)
Title: Catalyst for polyurethane foam carpet backings and carpets prepared therewith
Inventor: MOBLEY LARRY WAYNE
IPC: D06N7/00
Filed: 1996-02-14
Abstract: Polyurethane foam backed textiles, particularly polyurethane backed carpets can be prepared using a formulation including a dialkyltin sulfide catalyst. Use of the dialkyltin sulfide catalyst allows for a delayed gellation without substantially increasing the time from gellation to cure. The delay in gellation provides for improved handling and backing quality.
Patent CA-2218034-A1 (CA)
Title: Pancreas-derived serpin
Inventor: DIEP DINH
IPC: A61K48/00
Filed: 1996-05-01
Abstract: The present invention provides nucleotide and amino acid sequences that identify and encode a novel Pancreas-Derived Serpin (PDS) expressed in human pancreas. The present invention also provides for antisense molecules to the nucleotide sequences which encode PDS, expression vectors for the production of purified PDS, antibodies capable of binding specifically to PDS, hybridization probes or oligonucleotides for the detection of PDS-encoding nucleotide sequences, genetically engineered host cells for the expression of PDS, diagnostic tests based on PDS-encoding nucleic acid molecules and a pharmaceutical composition containing PDS capable of binding specifically to a serine protease.
Patent CA-2218292-A1 (CA)
Inventor: COHEN SIDNEY M
IPC: C04B18/02
Filed: 1997-10-15
Abstract: Disclosed is a method and an apparatus used in said method, to produce aggregate products from waste material streams.  The method comprises combining an encapsulation material with waste materials to form a mix suitable for granulation.  This mix is then feed to a granulation means to form particles having a size suitable for thermal treatment in a bed thermal processing means, which can be a fluid bed system or a spouting bed system.  In the bed thermal processing apparatus the particles are converted into an aggregate product.
Patent CA-2219557-A1 (CA)
Title: Run-time instrumentation for object oriented programmed applications
Inventor: KNIGHT CHRISTINE NANCY
IPC: G06F11/34
Filed: 1997-10-29
Abstract: It is desirable for software developers to be able to conveniently obtain feedback from users of applications. It is known for developers and others to use code instrumentation for gathering various types of data relating to applications and their uses. The use of compile time instrumentation may be practical for some situations but it has significant drawbacks when used to provide indications of user interaction with applications. The present invention relates to the use of run time instrumentation for providing feedback from users of object oriented applications where the applications have unique object identifiers and support dynamic data exchange. The invention utilizes a setup software tool to create a monitor input file which indicates which objects of the application should be monitored when a user interacts with them.
Patent CA-2224564-A1 (CA)
Inventor: HANCOCK KIM R
IPC: G01M13/02
Filed: 1996-06-26
Abstract: An apparatus (40) for applying marking compound to the tooth surfaces of a gear or pinion member (14). The apparatus comprises a brush (42) having a central shaft (82) and a plurality of bristles (44) emanating from the shaft (82) with the brush (42) being rotatable about an axis of rotation coincident with the shaft (82). The apparatus also includes a cover plate (49) and a marking compound manifold (48) adjacent to the brush (42) comprising an inlet (92) in a first side of the manifold (48), an inner distribution chamber (94) communicating with the inlet (92), and a plurality of outlets (96) in a second side of the manifold (48) communicating with the inner chamber (94), the outlets (96) facing the bristles (44) of the brush (42). The apparatus (40) further includes means (52, 54) to move the brush (42) and manifold (48) from a first position remote from the gear or pinion (14) to a second position wherein the bristles (44) engage the tooth surfaces of the gear or pinion (14). The brush (42) is rotated by engaging the bristles (44) with the tooth surfaces of the gear or pinion member (14) and rotating the engaged gear or pinion member (14) about its respective axis. The apparatus (40) may further include a movable splash guard (98) to protect the brush (42) from contamination when the apparatus (40) is in the first position.
Patent CA-2226877-A1 (CA)
Title: Process for producing 4a-aryldecahydroisoquinoline derivatives
Inventor: KAWAMURA KUNIAKI
IPC: C07D217/04
Filed: 1996-05-15
Abstract: A process for producing novel 4a-aryldecahydroisoquinoline derivatives according to the above reaction scheme (I).
Patent CA-2226911-A1 (CA)
Title: Methods of treatment of neurological diseases by interferon antagonists
Inventor: MAROUN LEONARD E
IPC: C07K14/555
Filed: 1996-07-10
Abstract: The invention concerns a method of preventing neurologic injury caused by hypersensitivity to interferons. The invention is useful to prevent progression of diseases such as Down Syndrome and Alzheimer's Disease. The method of the invention comprises the administration of a soluble antagonist of interferon. More particularly, the method concerns the in utero administration of a soluble antagonist of interferon.
Patent CA-2230340-A1 (CA)
Title: Burst demodulator
Inventor: IEMURA TAKAYA
IPC: H04L7/02
Filed: 1998-02-24
Abstract: A burst demodulator prevents transmission efficiency from being lowered, and a dynamic range of an input strength from being narrowed, by providing a stable frame signal even if the reaction is rapid against the input and the input strength is low.  A logarithm amplifier outputs an electric power strength of a modulated input signal as a logarithm value, and an integrator smooths the output of the logarithm amplifier and outputs the smoothed output as an RSSI.  The comparator compares the RSSI with the appropriate reference value REF while including some margin within the noise level, and outputs the frame signal of an 'LO' state when the RSSI is lower than the REF, that is, during the non-signal zone, of an 'HI' state when the RSSI is higher than the REF, that is, during the signal zone.          The period of the comparator output continuously remaining in the 'LO' state cannot exceed one clock period even if the comparator output flutters within one time slot.  When the comparator output is fixed to the 'LO' state and the CLK is input by two clocks, the output of the counter becomes the 'HI' state, whereby the output of the counter and the OR computing element mask the CLK, which fixes the counter output to the 'HI' state until the comparator output becomes the 'HI' state again.
Patent CA-2230832-A1 (CA)
Title: A flat key for a tumbler-containing locking cylinder of a lock apparatus
Inventor: STEFANESCU ALEXANDER
IPC: E05B19/00
Filed: 1998-02-26
Abstract: A flat key for a locking device has a generally T-shaped cross-section with a stem having oppositely-disposed sides each having at least one longitudinal groove.  The side walls of the grooves and the end of the stem are curved circularly or elliptically so as to provide the key with rounded surfaces. A key as provided herein avoids sharp edges and angles thereby reducing the possibility of damage or injury.
Patent CA-2232015-A1 (CA)
Title: Process for the selective and safe recovery of residual gases from a pyrolysis reaction of solid carbonizable material
Inventor: LAMOTHE JEAN-PIERRE
IPC: C10B53/00
Filed: 1998-04-22
Abstract: The invention relates to a process for the selective and safe recovery of residual gases produced in a reactor during pyrolysis of solid carbonizable material, such as wood chips, sawdust and similar wood particles, car fluff, coal, coal residues, plastics, soils contaminated with hydrocarbons, tires and any material rich in polymerized hydrocarbons.      The process comprises the steps of introducing said solid carbonizable material into a pyrolysis reactor; making vacuum in the pyrolysis reactor by means of a first pumping system, so as to extract oxygen-containing gases present in said pyrolysis reactor and to exhaust said extracted gases in the air; stopping the first pumping system when the subatmospheric pressure in the pyrolysis reactor is between 1 and 2.5 Psi; introducing a burning combustion gas with a B.T.U of at least 1350 or burning combustion oils with a B.T.U of at least 1800, into the pyrolysis reactor; recovering oils-containing combusted gases from a heating zone of the pyrolysis reactor, condensing the oils present in said combusted gases in a condenser, separately recovering the so condensed oils in a separator and filling by means of a second pumping system a gas storage enclosure connected to the separator by a line with said combusted gases recovered after condensation and separation of the oils; and when the rate of total hydrocarbon content in the gases (THC) present in the gases after condensation and separation of the oils, is lower or equal to 60 %, stopping the second pumping system and exhausting said combusted gases through at least one flare.      The process is further characterized in that the first pumping system is mounted on a first derivation of they line connecting the separator and the gas storage enclosure, said first derivation extending between the separator and the gas storage enclosure; and the second pumping system is mounted on a second derivation of the line connecting the separator and the gas storage enclosure, said second derivation extending between the first derivation and the gas storage enclosure.
Patent CA-2233097-A1 (CA)
Title: Peanut butter and jelly food slice
Inventor: CHENN FLETCHER
IPC: A23L25/10
Filed: 1998-03-23
Abstract: A non-spread, sliced peanut butter and jelly slice containing jelly that is completely surrounded by peanut butter. The peanut butter and jelly slice, when placed in a sandwich will exhibit the same textures, flavors and qualities of a peanut butter and jelly sandwich that is made by hand. The final product may be packaged in non-stick wrap, sealed and frozen to keep fresh and allow the product to maintain its form. A method for making the non-spread, peanut butter and jelly slice is also disclosed.
Patent CA-2233795-A1 (CA)
Inventor: BLECHSCHMIDT WOLFGANG J
IPC: E05F15/02
Filed: 1998-04-01
Abstract: An air-driven rotating window assembly mountable to one side of a viewing window. The rotating window assembly faces toward the working or weather exposed area and slings off, by centrifugal force, any debris that contacts the rotating window so as to maintain clear visibility through a portion of the viewing window over which the rotating window extends. The rotating window assembly includes a support base and a rotating window rotatably mounted to the support base. The rotating window has an annular frame with propulsion passages therein that receive a flow of pressurized gas substantially tangentially to the frame. The propulsion passages redirect the gas to generate a propulsive force on the frame to spin the rotating window relative to the support base.  The gas exits the annular frame through a restricted gap between the support base and the rotating window so as to form an air barrier that prevents debris from passing through the gap.
Patent CA-2233866-A1 (CA)
Title: Performance event sensing for control of electric motor driven golf car
Inventor: JOURNEY JAMES C
IPC: B60L11/18
Filed: 1998-04-02
Abstract: A system is provided for controlling a D-C motor which is constructed to propel a golf car.   The motor is controlled  to  provide  performance  according  to  a predetermined  field  current  map  which  calls  for  a particular   performance    response    to    specified performance  events.     The  performance  events  are detected by sensing actual speed and armature current and   the   performance   response   is   triggered   by adjustment  of  the  field  current.  A performance map correlating  actual  speed  to  various  events  and specifying the field current response is designed for the  motor  used.    In  addition  an  armature  current performance map is  similarly constructed correlating armature current to particular performance events.
Patent CA-2238493-A1 (CA)
Title: Insecticidal enzymes
Inventor: SCHWAB GEORGE E
IPC: A01N63/50
Filed: 1996-12-09
Abstract: The subject invention concerns methods and compositions for the selective control of pests. The method involves the administration of compounds which act on ecdysteroids or their derivatives or precursors. In a preferred embodiment, plants are transformed to express ecdysone oxidase which controls pests which feed on the transformed plants.
Patent CA-2240922-A1 (CA)
Inventor: STRAND ROLF L
IPC: F23N1/00
Filed: 1998-06-17
Abstract: A solid-state fail safe gas valve system in which first and second gas valves are arranged in series in a gas passageway, the valves being actuatable by first and second solenoid operators respectively, the second operator requiring a voltage greater than the operating voltage supplied to the valve system to achieve actuation. The operators are separately energized through microprocessor controlled switches so that a capacitor connected across the second operator and its switch is pumped to a voltage above the supplied voltage by voltage induced by interrupted energization of the first operator.
Patent CA-2241740-A1 (CA)
Title: Appareil de chauffage tubulaire du type a circulation de flux gazeux
Inventor: MATSUO MAMORU
IPC: F22B31/08
Filed: 1996-12-27
Abstract: La présente invention concerne un appareil de chauffage tubulaire à circulation de flux gazeux dont le rendement de transfert thermique est accru et qui comporte une zone de transfert thermique n'excédant pas environ la moitié de celle d'un appareil classique et pour laquelle il n'y a aucune restriction quant à la nature des combustibles utilisés. L'appareil de chauffage est constitué d'une multitude de tubes (19, ---, 19), de chambres de chauffage (2, 2) pourvues de sources de chaleur (3A, 3B) destinées à chauffer un gaz circulant à l'extérieur du four et d'un circuit de circulation (4) extérieur au four reprenant une partie du gaz circulant, lui faisant traverser une zone intérieure (18) du four, le faisant ressortir du four et le renvoyant vers la zone intérieure (18) du four depuis un autre endroit. Le circuit de circulation (4) extérieur au four est constitué de corps d'accumulation thermique (5A ou 5B) respectivement disposés au niveau des zones d'entrée et de sortie (9A, 9B) desservant la chambre de chauffage (2), d'une soufflante de circulation (6), d'un inverseur de flux (7) permettant de diriger le flux gazeux sur les corps d'accumulation thermique (5A ou 5B) en raccordant sélectivement et alternativement les côtés aspiration et décharge de la soufflante de circulation (6) à l'un ou l'autre des corps d'accumulation thermique (5A ou 5B), et d'un extracteur thermique (8) permettant d'extraire ou de réduire la chaleur des corps d'accumulation thermique (5A ou 5B). On arrive ainsi à obtenir une température élevée dans la zone intérieure (18) du four, avec des flux puissants de circulation (10) qui s'inversent périodiquement sous l'effet d'un inverseur de flux (7).
Patent CA-2242302-A1 (CA)
Inventor: MEYER DEAN E
IPC: A63B53/04
Filed: 1997-11-04
Abstract: A metal wood golf clubhead has a length "L" representing the distance, measured perpendicular to the centerline, between the heel and toe; a rearmost point that lies at a distance "A", measured perpendicular to said centerline, from the heel; and a rear edge having a radius of curvature R2, in the region of the rearmost point. In accordance with one aspect of the invention, the distance "A" from the heel to the rearmost point on the clubhead rear edge is at least 60 mm and/or at least 56 % of the overall clubhead length "L". In accordance with another aspect of the invention, the clubhead has a volume of at least 180 cm3, the center of curvature of the rear edge, in the region of the rearmost point, is offset from the club's centerline CL toward the toe, and the radius of curvature R2 in the region of the rearmost point is less than 41 mm.
Patent CA-2244093-A1 (CA)
Inventor: STRZELICHOWSKI WIESLAW
IPC: H01J9/44
Filed: 1997-10-23
Abstract: A process and apparatus are described for custom magnetizing a magnetic ferrite ring on the outside of the neck of a color cathode ray tube (CRT), in order to provide correction of convergence, color purity and frame errors in the CRT. The two step process provides for a first coarse correction step and a second fine correction step, each step involving bringing the ring to an initial state of magnetic saturation, and then custom magnetizing the ring using a series of high power AC pulses and low power DC offsetting fields, via cylindrical coils positioned around the periphery and in close proximity to the ring.
Patent CA-2245517-A1 (CA)
Title: Procedes pour la production de particules de polyacrylamide
Inventor: ARMITAGE YVONNE CHRISTINE
IPC: C08J3/12
Filed: 1997-02-04
Abstract: L'invention a pour objet des procédés pour la production d'une poudre de polyacrylamide sensiblement sèche dans laquelle les niveaux de monomère d'acrylamide résiduel sont sensiblement réduits. Ces procédés sont particulièrement appropriés pour être mis en oeuvre à une échelle industrielle. Un procédé consiste à fournir des particules de gel de polyacrylamide aqueux contaminé par un monomère acrylamide, à appliquer une enzyme amidase aux particules de gel aqueux, à une température comprise entre 50 et 95 ·C, et ensuite, pratiquement immédiatement, à envoyer les particules de gel aqueux vers une étape de séchage où elles sont soumises à une température d'au moins 60 ·C. Les niveaux finaux d'acrylamide résiduel peuvent être encore réduits par l'introduction d'une étape de maintien courte n'excédant pas 30 minutes, à une température comprise entre 20 et 70 ·C, avant de faire sécher les particules.